Yu Koromoya attracts fans with his outstanding drawing skills, imagination, and witty storytelling. In this work, we challenge science fiction set in the present age! Mayumi Ota and Takuya Maeda are childhood friends who are more than friends but less than lovers. One morning, when they had the same dream, something strange happened to their bodies. Mayumi, who was supposed to have been hit by a car, slipped through the car, and Takuya, who thought he was going to run lightly, ended up floating in the air!! Mayumi begins to suffer and loses consciousness. Then, someone appears from a different time and space to warn them, "By agreement, no harm will be done to earthlings. Be quiet."